Thorin Klosowski

In small quantities, bike tube patch kits aren't terribly expensive. However, if you're riding all year, or going out with a bunch of people, stocking up on kits gets expensive. If you don't mind getting your hands dirty, Instructables user Zaphod Beetlebrox show a simple process for making your own patch kits in bulk.

The Instructables is pretty simple and essentially just takes the common parts of a patch kit and comes up with the DIY equivalent. All you need is a little contact cement, sandwich bags, sand paper, and an old inner tube. With all those in tow, you simply need to cut everything down, seal the contact cement in a bag, and you're done. They're certainly not as nice to look at as a store-bought kit, but it doesn't really matter when you're out on a ride. Head over to Instructables for a full guide.